National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

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TRINITY RIVER - HOOPA (HOOC1)
Latitude: 41.05º NLongitude: 123.68º WElevation: 333 Feet
Location: Humboldt County in CaliforniaRiver Group: North Coast
Monitor Stage: 44.0 FeetFlood Stage: 48.0 Feet

Observed Data Credit
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Raw streamflow data is provided by the US Geological Survey (USGS).
View USGS Data for this station location.

Historical Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2024*
46,500
28.44
Jan 14, 2024
2023*
66,500
32.28
Mar 15, 2023
2022*
16,600
20.91
Jan 8, 2022
2021*
13,300
19.67
Feb 16, 2021
2020*
25,100
23.65
Jan 26, 2020
 Historical High Stage/Flow Events (Period of Record - Oct 1931 to Present)** - Ranked by Flow
1965*
231,000
57.00
Dec 22, 1964
1956
190,000
36.90
Dec 22, 1955
1974*
145,000
45.98
Jan 16, 1974
1983*
122,000
43.16
Jan 27, 1983
1997*
122,000
42.97
Jan 01, 1997
1986*
116,000
42.43
Feb 18, 1986
 * Discharge affected by regulation or diversion
 ** Most recent continuous record back to Oct 1931 with segmented periods back to Oct 1911
Location Photographs
ESRI™ Locator Map
Official 7 Day National Weather Service Forecast   (CAZ105)
Today: Sunny. Highs 92 to 107.

Tonight: Mostly clear. Lows 58 to 68.

Saturday: Sunny. Highs 96 to 111.

Saturday Night: Mostly clear. Lows 59 to 69.

Sunday: Sunny. Highs 95 to 110.

Sunday Night through Tuesday Night: Mostly clear. Lows 57 to 67. Highs 95 to 110.

Wednesday and Wednesday Night: Mostly clear. Highs 87 to 102. Lows 54 to 64.

Thursday: Sunny. Highs 81 to 96.
Flood Impacts
57.0 FeetSevere flooding of roads, bridges and structures in and around low areas of the river is expected. Many road closures are likely including Highway 96 at several locations between Willow Creek and Weitchpec. Many homes and businesses in valley areas will be innundated.
55.0 FeetExtensive and severe flooding between Willow Creek and Weitchpec, and flooding of many homes and businesses in the valley areas. Expect closure of Highway 96 between Willow Creek and Weitchpec.
53.0 FeetExtensive flooding of all low lying areas adjacent to the river, including Highway 96 north and south of Hoopa. Significant damage to structures in these areas is likely.
51.0 FeetExtensive flooding of all low lying areas adjacent to the river including Highway 96 both north and south of Hoopa is likely. Significant damage to structures in these areas is possible.
48.0 FeetConsiderable flooding of low lying areas adjacent to the river including Highway 96 is likely. Significant damage to structures in these areas is possible.
46.0 FeetFlooding of many low lying areas near the river is likely. Minor flooding may occur over Highway 96 between Willow Creek and Hoopa.
44.0 FeetMinor flooding of the lowest lying areas may occur.
Product Disclaimer

This river graphic is not intended to serve as a substitute for official flood watches, warnings, advisories, or statements issued by the NWS Eureka Weather Forecast Office. Observations are preliminary and subject to change. River levels identified as "forecast" should be consistent with those contained in official NWS products. River levels identified as "guidance" have significant uncertainty due to future weather or reservoir regulation and are provided for planning purposes only.